No 1-2 And/Or 2-3 Upshift

Check Throttle Position Sensor (TPS) circuit, No. 1 and No. 2 shift solenoid circuit, Vehicle Speed Sensor (VSS), Electronic Control Transmission Electronic Control Unit (ECT ECU), 1-2 shift valve, 2-3 shift valve, second brake, direct clutch and No. 1 one-way clutch.